It is easy to forget quickly what made David so successful and why he never lost a single battle, "so David asked God, should I...?" Again and again, this strategy was the secret to his many victories. We also note that anytime he failed to or didn't bother asking, the mistakes were often great and calamitous, in chapter 13, it cost a man, Uzzah, his life. If you want to win in life, make it a habit to pray.